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45 results for “host caterpillars”
Figure 1 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 1. (A) Final instar larva of Cyclosia macularia on Baccaurea motleyana leaf found in orchard (scale bar = 10 mm); (B) final instar larvae of C. macularia on B. motleyana leaf (scale bar = 10 mm); (C) turned black before it underwent pupation (scale bar = 10 mm).
FIGURE 6 in A trunk-nesting form of the processionary caterpillar Ochrogaster lunifer (Lepidoptera: Notodontidae) restricted to a single host species Corymbia tessellaris (Myrtaceae), with some comparisons to the ground-nesting form
FIGURE 6 The temperature inside nests of O. lunifer larvae compared with ambient over a 24 h cycle: (a) tree-hugger nests (n = 9) and (b) ground nests (n = 14). The data point for each nest is the mean of seven to eight consecutive days of measurement.
FIGURE 5 in A trunk-nesting form of the processionary caterpillar Ochrogaster lunifer (Lepidoptera: Notodontidae) restricted to a single host species Corymbia tessellaris (Myrtaceae), with some comparisons to the ground-nesting form
FIGURE 5 Ochrogaster lunifer (a) pupa with cocoon cut open and (b) newly emerged adult female of the tree-hugger form.
FIGURE 1 in A trunk-nesting form of the processionary caterpillar Ochrogaster lunifer (Lepidoptera: Notodontidae) restricted to a single host species Corymbia tessellaris (Myrtaceae), with some comparisons to the ground-nesting form
FIGURE 1 The egg masses and nests of the two forms of O. lunifer co-occurring at Gatton, QLD: (a) tree-hugger egg mass in the fork of a twig, (b) tree-hugger nest on the trunk of C. tessellaris, (c) three ground egg masses at base of an Acacia sp., and (d) a ground nest.
FIGURE 2 in A trunk-nesting form of the processionary caterpillar Ochrogaster lunifer (Lepidoptera: Notodontidae) restricted to a single host species Corymbia tessellaris (Myrtaceae), with some comparisons to the ground-nesting form
FIGURE 2 The confirmed locations of the O. lunifer tree-hugger form and the range of C. tessellaris occurrence in Australia. C. tessellaris data from the Atlas of Living Australia.
FIGURE 3 in A trunk-nesting form of the processionary caterpillar Ochrogaster lunifer (Lepidoptera: Notodontidae) restricted to a single host species Corymbia tessellaris (Myrtaceae), with some comparisons to the ground-nesting form
FIGURE 3 The orientation of egg masses and nests of O. lunifer: (a) tree-hugger egg masses, (b) ground-nester egg masses, (c) tree-hugger nests, and (d) ground nests. Dashed line is the mean orientation.
Fig. 2 in Host plant resistance in cultivated jute and its wild relatives towards jute hairy caterpillar Spilosoma obliqua (Lepidoptera: Arctiidae)
Fig. 2. Mean number of egg clusters (A) and eggs per cluster (B) laid by Spilosoma obliqua females on 6 jute species in no-choice tests.
Fig. 1 in Host plant resistance in cultivated jute and its wild relatives towards jute hairy caterpillar Spilosoma obliqua (Lepidoptera: Arctiidae)
Fig. 1. Effect of cultivated and wild jute species on Spilosoma obliqua larvae settlement (%) (A) and leaf area consumed (cm2) (B) afer 24 h in multiplechoice tests.
Data from: Disease from leaves to landscapes: Viral hotspots are determined by spatial arrangement and phytochemistry of host plants in specialist caterpillars
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Data from: Differing thermal sensitivities in a host-parasitoid interaction: high, fluctuating developmental temperatures produce dead wasps and giant caterpillars
<p>1. Insect parasitoids, and the arthropod hosts they consume during development, are important ecological players in almost all environments across the globe. As ectothermic organisms, both parasitoid and host are strongly impacted by environmental temperature. If thermal tolerances differ between host insect and parasitoid, then the outcome of their interaction will be determined by the ambient temperature. As mean temperatures continue to rise and extreme temperatures become more frequent, we must determine the effect of high temperature stress on host-parasitoid systems to predict how they will fare in the face of climate change.</p> <p class="MsoNoSpacingCxSpMiddle">2. The majority of studies conducted on host-parasitoid systems focus on either performance under constant temperature, or a fixed metric of thermal tolerance (CT<sub>max</sub>) for individual organisms. However, performance at constant temperatures is not predictive of performance under ecologically relevant, fluctuating temperatures, and measurements of thermal thresholds provide little information regarding the effects of temperature throughout development. We address this by testing the effects of increasing mean temperature in both constant and fluctuating (±10°C) environments throughout development on the performance of the parasitoid wasp <i>Cotesia congregata</i> and its lepidopteran larval host, <i>Manduca sexta.</i></p> <p class="MsoNoSpacingCxSpLast">3. The growth of <i>M. sexta</i> was influenced by mean temperature, diurnal fluctuations, and parasitization status. Caterpillar growth rate increased with increasing mean temperature, but decreased in response to diurnal fluctuations and parasitization by <i>C. congregata </i>wasps.</p> <p>4. Wasp survival decreased with increasing mean temperature, and diurnal fluctuations decreased wasp survival, especially at higher mean temperatures. Diurnal fluctuations at our highest mean temperature treatment (30°C±10°C) resulted in complete wasp mortality, and parasitized hosts displayed abnormal physiology, wherein they failed to exhibit wasp emergence, did not enter the prepupal stage, continued to feed, and grew up to two-fold larger than a normal, unparasitized caterpillar.</p> <p>5. Our results indicate hosts and parasitoids in this system have different thermal tolerances during development; the parasitoid wasp suffered complete mortality at a temperature regime that is mildly stressful for the unparasitized caterpillar host species. Our findings suggest <i>C. congregata </i>will suffer more severely under increasing temperatures than <i>M. sexta</i>, with cascading trophic and ecological effects.</p>
FIGURE 4 in A trunk-nesting form of the processionary caterpillar Ochrogaster lunifer (Lepidoptera: Notodontidae) restricted to a single host species Corymbia tessellaris (Myrtaceae), with some comparisons to the ground-nesting form
FIGURE 4 Frequency plot of the head capsule widths of Ochrogaster lunifer tree-hugger larvae.
Data from: Differing thermal sensitivities in a host-parasitoid interaction: high, fluctuating developmental temperatures produce dead wasps and giant caterpillars
Open the record for dataset details and reuse information.
FIGURES 23–28. Mummified host caterpillar remains. Figure 23 in Revision of North American Aleiodes (Part 9): the pallidator (Thunberg) species-group with description of two new species (Hymenoptera: Braconidae, Rogadinae)
FIGURES 23–28. Mummified host caterpillar remains. Figure 23. Dasychira sp. parasitized by A. indiscretus. Figure 24. Lymantria dispar (gypsy moth caterpillar) parasitized by A. lymantriae. Figure 25. Dasychira sp. parasitized by A. pallidator. Figure 26. Leucoma salicis (satin moth caterpillar) parasitized by A. pallidator. Figure 27. Orgyia leucostigma parasitized by A. pallidator. Figure 28. Olene grisefacta parasitized by A. xanthoclypeus.
Figure 10 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 10. Final instar larvae of Cyclosia macularia: (A) thoracic leg (scale bar = 1 mm); (B) A3 proleg (scale bar = 1 mm). C – distal claw, CX – coxa, F – femur, TA – tarsus, TI – tibia, TR – trochanter.
Figure 8 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 8. Final instar larva of Cyclosia macularia: (A) lateral perspective (scale bar = 10 mm); (B) ventral perspective (scale bar = 10 mm). AP – abdominal prolegs, AnP – anal prolegs, AS – anal shield, H – head, LB – labrum, MD – mandible, T – tentacle, TL – thoracic legs, PS – prothoracic shield.
Figure 5 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 5. (A) Bipectinate antenna of female Cyclosia macularia (♀; scale bar = 1 mm); (B) ovipositor of female C. macularia (♀; scale bar = 1 mm).
Figure 3 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 3. The obtect pupa is golden-brown in colour, with body length ranging from 2.3 to 2.7 cm. Male pupa (♂; right) and female pupa (♀; left) (scale bar = 10 mm).
Figure 9 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 9. Final instar larvae of Cyclosia macularia: (A) frontal view (scale bar = 1 mm); (B) stemmata region (scale bar = 1 mm). A – antenna, CL – clypeus, LB – labrum, MD – mandibles, S – spinneret, ST – stemmata, T – tentacles.
Figure 7 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 7. (A) Eggs that were laid in mass (scale bar = 1.5 mm); (B) eggs that were laid scattered singly (scale bar = 1.5 mm).
Figure 2 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 2. (A) Pinkish-brown coloured cocoon was aligned at the basal midrib of the leaf (scale bar = 50 mm); (B) the cocoon was detached from the leaf (scale bar = 10 mm).
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